Tyre buying Guide | Complete information

In this video, we break down everything you need to know about the numbers, letters, and symbols written on your tyres. Whether you're a car enthusiast, a new driver, or just curious, this guide will help you understand: Tyre Size and Dimensions (e.g., 185/65R15) This is the most visible and important information on your tyre. It usually looks something like 185/65R15. Here’s what each part means: 185: This is the width of the tyre in millimeters. It’s the distance from one sidewall to the other. 65: This is the aspect ratio, which is the height of the tyre’s sidewall as a percentage of the width. In this case, the sidewall height is 65% of 185 mm. R: This stands for Radial, which is the construction type of the tyre. Almost all modern tyres are radial. 15: This is the rim diameter in inches. It tells you the size of the wheel that the tyre is designed to fit. Why it matters: Choosing the correct tyre size is crucial for safety, performance, and compatibility with your vehicle. Load Index and Speed Rating (e.g., 91H) These numbers and letters indicate how much weight the tyre can carry and the maximum speed it can handle. Load Index (e.g., 91): This is a numerical code that corresponds to the maximum weight the tyre can support. For example, a load index of 91 means the tyre can carry 615 kg. You can find load index charts online to decode the number. Speed Rating (e.g., T): This letter indicates the maximum speed the tyre can safely handle. For example, "T" means the tyre can handle speeds up to 190 km/h . Other common ratings include "H" (210 km/h) and "V" (240 km/h). Why it matters: Exceeding the load index or speed rating can lead to tyre failure, which is extremely dangerous. Always match the load index and speed rating to your vehicle’s requirements. Manufacturing Date (DOT Code) The DOT code is a series of numbers and letters that include the tyre’s manufacturing date. Look for a code like DOT XXXX XXXX 0126: The last four digits (e.g., 0126) indicate the manufacturing date. The first two digits (01) represent the week of the year, and the last two digits (26) represent the year. So, "0126" means the tyre was made in the 1st week of 2026. Why it matters: Tyres degrade over time, even if they’re not used. Most manufacturers recommend replacing tyres after 6-10 years, regardless of tread depth. Knowing the manufacturing date helps you avoid buying old or unsafe tyres. Tyre Type and Performance Indicators Tyres are designed for specific conditions, and this is indicated by symbols and letters: M+S (Mud and Snow): Indicates the tyre is suitable for mud and light snow. All-Season, Summer, or Winter Tyres: Summer tyres are optimized for wet and dry conditions in warmer weather. Winter tyres have special tread patterns and rubber compounds for snow and ice. All-Season tyres are a compromise between summer and winter tyres. Why it matters: Using the right type of tyre for the season improves safety and performance. For example, winter tyres provide better grip in cold temperatures, while summer tyres offer better handling in warm weather. Treadwear, Traction, and Temperature Ratings (UTQG) The Uniform Tyre Quality Grading (UTQG) system provides information about the tyre’s performance in three areas: Treadwear: This number indicates how long the tyre is expected to last compared to a reference tyre. For example, a treadwear rating of 400 means the tyre lasts twice as long as a tyre with a rating of 200. Traction: This letter (AA, A, B, or C) indicates the tyre’s ability to stop on wet pavement. "AA" is the highest rating. Temperature: This letter (A, B, or C) indicates the tyre’s resistance to heat. "A" is the best rating. Why it matters: These ratings help you compare tyres and choose the best one for your needs. For example, if you drive long distances, a higher treadwear rating might be important. Additional Markings Tyres often have other symbols and labels that provide useful information: Run-Flat Tyres: Marked with "RFT" or "Run-Flat," these tyres can support the weight of your car even after a puncture, allowing you to drive to a repair shop. Reinforced Tyres: Marked with "XL" or "Extra Load," these tyres are designed to carry heavier loads. Rotation Arrows: Indicate the direction the tyre should rotate for optimal performance. Outside/Inside Labels: Show which side of the tyre should face outward (important for asymmetric tyres). Why All This Matters Understanding tyre information is essential for: Safety: Properly maintained and correctly chosen tyres reduce the risk of accidents. Performance: The right tyres improve handling, braking, and fuel efficiency. Cost Savings: Knowing when to replace tyres and choosing the right ones can save you money in the long run. #tyreguide #howtobuytyre #tyretech #tyretips #newglobaltyres